Carbureter.



W. O. BINGAMAN.

CARBURETER.

APPLICATION FILED APR. 10 1914.

1 l 5 1 1 56 Patented Aug. 24, 1915.

2 SHEETS-SHEET 2.

Snow wow wanes aw COLUMBIA PLANuuRAI'H 00., WASHINGTON. D. c.

WALLACE O. BINGAMAN, OF FLORA, INDIANA.

GARBURETER.

Specification of Letters Patent.

Patented Aug. 24, 1915.

Original application filed Novemberll, 1913, Serial No. 800,271. Divided and this application filed April 10, 1914. Serial No. 830,954.

To all whom itmag concern Be it known that I, VVALLA E O. BINe'A- MAN, citizen of the United States, residing at Flora, in the county of Carroll and State of Indiana, have invented certain new and useful Improvements in Carbureters, of which the following is a specification.

This application is a division of an application filed by me November 11, 1913, Serial No. 800,271.

This invention relates to carburetors and has for its object the provision of means whereby the feeding of fuel will be automatically controlled by the speed of the engine.

Other incidental objects of the invention will appear as the description of the'same proceeds and the invention consists in certain novel-features which are illustrated in the accompanying drawings and areparticularly pointed out in the claims following the detailed description Figure 1 is a plan view of an engine embodying my improvement, Fig. 2 is a vertical longitudinal section through the cylinder and crank case, Fig. 3 is an enlarged vertical section through the carbureter, and Fig. 4. is an enlarged elevation of the carbureter.

In carrying out my invention, I employ a base or other supporting frame 1 upon which is secured in any desired-manner a casing, one portion of which constitutes a crank case 2 and the other portion of which constitutes a cylinder 3. The driving shaft 4: of the engine is journaled in and extends through the sides of the crank case and is provided within the crankcase with a crank portion 5 which is. connected by a pitman 6 with the piston 7 mounted within the cylinder 3. The piston isprovided at its outer end with an annular extension 8 constituting a valve seat and against the said seat is disposed a valve" 9 having a stem 10 projecting through a spider or web 11- in the end, of the piston and forming aninlet for the flow of fuel from the crank case through the piston into the explosion chamber of the cylinder. A spring 12 is coiled.

around the rear end of the stem10 between the spider 11 and a flange or stop 13-on the end of the stem sothat the valve 9 is held normally against the seat 8. The cylinder 3 is provided with external cooling ribs 1 1 andis provided intermediate its ends with exhaust ports 15' arranged in an annular series extending entirely around the cylinder and opening directly into an annular chamber 16 from which an exhaust pipe 17 may lead at any desired or convenient point. The crank shaft l is provided upon its outer ends with fiy-wheels 18 and one of the said flywvheels is connected by a belt 19 with a pulley 20 upon a fan shaft 21 which is j our.- naled in and supported by a bracket 22 secured to and projecting from the crank case, as shown most clearly in Fig. 1. A fan 23 is secured upon the inner end of the said shaft immediately adjacent the cylinder, so as to play upon the ribs ll and thereby cool the cylinder, as will be readily understood. The fuel isstored within a tank supported in any convenient manner at the rear of the crank case and a supply pipe 24 leads from said tank into the bottom of the carbureter bowl 25 which is secured to and c0mmunicates with the crank case, as shown'in Fig. 3. It will thus be seen that the fuel flows from the tank into the crank case and then passes through the piston into the explosion chamber of the cylinder. On the forward or outward stroke of the piston the charge admitted to the cylinder will'be compressed and exploded and the force of the explosion will drive the cylinder rearwardly toward the crank case, whereupon the charge admitted to the crank case will be partly compressed and overcome the tension of the spring 12 so as to open the valve 9 and then flow past said valve into the explosion cham her where the former operation will be repeated. Upon one of the fly-wheels are mounted governorv arms 29' which extend through the fiy-wheels in the spaces between the spokes thereof and are provided at their outer ends with the weights or balls 30, as shown. The said outer weighted ends of the governor arms are connected by a spring 31 which tends to draw the said weighted ends of the arms toward each other and thereby hold the governor in the normal position; The inner ends of the governor arms extend-substantially radially of the fly-wheels, as shown at 32, and engage an annular groove in the governor sleeve 33 slidably mounted upon the crank shaft 4. The said governor sleeveis constructed with an annular groove 34: in which plays pins or studs carried by the'forked inner end of a lever 35 fulcrumed upon a bracket 36 projecting from the base I or support of the engine and the outer end of the said lever extends under a vibratory arm 37 which is" fulcrumed upon a post 38 on the carbureter bowl. Connected rigidly with the arm 37 and extending from the fulcrum'thereof over the carbureter bowl is a presser arm 60, which is preferably a resilient plate, and. on the under side of the arm 37, near the outer end thereof, is a projection 61 having a beveled end adapted to be engaged by the outer end of the lever 35. The movement of said leveragainst and under the projection has a cam-like or lifting action upon the arm 37 so that the arm will rise and the presser 60 will be correspondingly lowere Slidably. mounted in the top .of the carbureter bowl isa stem 62having a head 63 on its upper end and having its lower end formed into a needle valve 64. This valve seats in the fuel inlet 65 to close the'same and the weight of the valve should be 'such that it will fit closely to itsseat when the 'engineis not running. The head 63 is directly under the free end of the presser arm 60 with sufficient clearance between the same through which the stem to permit the valve to rise and admit fuel vto the engine. Rigidly secured upon the stem 62 is a disk 66 which is so located as to lie just above the air inlet 67 of the carbureter, said air inlet being preferably disposed diametrically opposite the point of attachment of the carbureter to the crank case. The carbureter is provided with a tubular projection'68 which may be bolted or otherwise secured to a similar projection 69 on the crank case,fthereby providing a conduit for the flow of fuel to the crank case. Within the said conduit is provided avalve 70 which tends normally to engageits seat 71 and thereby cut ofi the flow to the crank case and hold the pressure therein. The seating of the valve is aided by a spring 7 2 which, is coiled around the stem 73 of the valve between the valve and a spider 74 plays and by which it is supported. When the engine is running at ordinary speeds, the pressure in the crank case tends to hold the valve seated. As the fuel passes into the cylinder, the pressure in the crank case is reduced and a suction created under which the valve will be openedand air drawn through the inlet 67 and the carbureter. This inrushing air passes under the disk 66 and lifts the same with the needle valve'so that a charge of fuel will be drawn pastthe needle valve to mix with the air and pass into the crank case. As the speed of the engine increases, the balls or weights 30 will move toward the periphery of the fiy-wheeland the governor arms will swing about their pivots so thatthe sleeve or collar 33 will be moved axially upon the crank shaft under excessive speed and, consequently, the lever35will be swung aboutits through the members of theyokeso that if the end of the pin 44 it may again normal.

Secured upon the top of the carbureter is an arch 75 which is split or divided longitudinally, as shown, and in which is mounted an adjustingscrew 76 which is arranged directly over the presser arm60 and the head 63. It; will be; readily seen that V the screw 7 6 forms a stop to limit theopening movementof thevalve 64 andxmay be turned down so as tohold the valve seated and prevent leakage or evaporation of the fuel when the engine is not in use. The adjustable stop screw is locked in a set position by a locking screw 77 which is threaded ,85 it be turned home said members will be drawn tightly together and-caused to bind around the adjusting screw, as will be readily understood.

The inner end of the governor sleeve 33 may be utilized as a timer disk and to this end will be provided witha conductor block flush with the surface of the disk to ride under the spring "40which constitutes .the

co.-acting member of the timer. The spring 40 projects from the end of a rod 41 rotatably mounted in a bracket 42projecting from the crank case: or base of the engine.

The rod isprovided with a spiral groove which is engaged by the end of'a pin- 44100 seated in said bracket 42. The outerend. of the rodis equipped with a turninghandle 46 of insulatin material and having an extended hub' 4 also of insulating material. The timer is, of course, electrically connected with the spark plug-48 in the outer end-of the cylinder and it will be readily understood that, by adjusting the rod 41 longitudinally the end of the spring 40 will-be moved to or from the vertical radius of the timer disk and, consequently, the s ark advanced or retarded. I If the rod be a justed to the inner limit of its movement, the insulating sleeve will rideunder will not be closed.

The cut-ofi'valve 64 will close by its own weight when'the engine stops so that the flow of fuel from the tank will be H positively prevented. vThe flow .offuel isauto- 1120' matically adjusted tocthe needsof the en- .gine so that wasting'of the fuelisprevented; When the engine is at work its .speed is automatically regulated and the working parts are all of simple construction 7125 so that theymay be easily repaired, and the governingnnacha'nism is accessible so that e cleaned and adjusted as frequently as may be necessary under any given circumstances without requiring an entire .130 i and the timer. circuit I rearrangement or dismantling of the engine.

What I claim is 1. In a gas engine, the combination of a crank case, a carbureter, a conduit connecting the carbureter with the crank case, a valve disposed in said conduit and normally seated against the flow from the carbureter, a gravitating valve mounted in. the carbureter and arranged to cut oif the flow of fuel into the same, -means whereby said valve will be raised when the valve in the conduit is opened, and means whereby the said valve in the carbureter will be held closed under excessive speed of the engine.

2. The combination of a carbureter, a governor, a valve mounted in the carbureter and controlling the flow of fuel into the same, a presser arm mounted on the carbureter and arranged to bear on said valve and close the same, a vibratory arm rigid with the presser arm and extending laterally from the carbureter and having a beveled projection on its under side at its free end, and a lever having one end connected Copies of this patent may be obtained for with and actuated by the governor and its opposite end arranged to ride against and under the beveled projection on the vibratory arm. 7

3. In a gas engine, the combination of a carbureter, a governor, a gravitatingvalve inthe carbureter to control the flow of fuel into the same, said valve having a stem rising through the top of the carbureter, a bracket on the carbureter extending over the stem of the valve, a presser arm mounted above the carbureter and extending over the stem of the valve, means actuated by the governor to force said presser arm upon the valve stem and thereby close the valve, and a set screw mounted in said bracket over said presser arm and adapted to force the arm to the valve stem and the valve to its seat.

In testimony whereof I aflix my signature in presence of two witnesses.

WALLACE 0. BINGAMAN. Witnesses:

EDWARD VOORHEES, JOHN WILKINSON.

five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

